@article{
  author = {Kamkar, Peyman, Nili, Mohammad Reza, Ali Abadi, Khadijeh},
  title = {Testing Factorial Structure of UseLearn Questionnaire and its Implementing in
E-Learning Universities of Tehran},
  journal = {Information and Communication Technology in Educational Sciences},
  year = {2013},
  volume = {4},
  number = {13},
  pages = {105-127},
  doi = {}
}